This is the fist step in the firmware upgrade process.
This code is inspired by JeanDo ostc-companion.
Signed-off-by: Anton Lundin glance@acc.umu.se --- src/hw_ostc3.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/src/hw_ostc3.c b/src/hw_ostc3.c index 4d6bf83..f647179 100644 --- a/src/hw_ostc3.c +++ b/src/hw_ostc3.c @@ -46,10 +46,13 @@ #define SZ_MEMORY 0x200000 #define SZ_CONFIG 4 #define SZ_FIRMWARE 0x01E000 // 120KB +#define SZ_FIRMWARE_BLOCK 0x1000 // 4KB +#define FIRMWARE_AREA 0x3E0000
#define RB_LOGBOOK_SIZE 256 #define RB_LOGBOOK_COUNT 256
+#define ERASE_RANGE 0x42 #define S_READY 0x4C #define READY 0x4D #define HEADER 0x61 @@ -871,3 +874,18 @@ hw_ostc3_device_service_mode (dc_device_t *abstract)
return DC_STATUS_SUCCESS; } + +static dc_status_t +hw_ostc3_device_erase_range (hw_ostc3_device_t *device, unsigned int addr, unsigned int size) +{ + dc_status_t rc = DC_STATUS_SUCCESS; + // Convert size to number of pages, rounded up. + unsigned char blocks = ((size + SZ_FIRMWARE_BLOCK - 1) / SZ_FIRMWARE_BLOCK); + + // Erase just the needed pages. + unsigned char buffer[4]; + uint24_be_array(addr, buffer); + buffer[3] = blocks; + + return hw_ostc3_transfer (device, NULL, ERASE_RANGE, buffer, sizeof(buffer), NULL, 0); +}